/// <summary>
/// Switch the page
/// </summary>
/// <param name="index"><see cref="int"/> with the index of the page to switch to. Zero indexed.</param>
/// <param name="animated"><see cref="bool"/> describing whether to animate the scroll to the page.
/// Will also enable a parallax effect on the Tab Indicator itself.</param>
public void SwitchPage(int index, bool animated)
{
if (ContentScrollView == null)
{
return;
}
if (TitleScrollView == null)
{
return;
}
var frame = new CGRect(ContentScrollView.Frame.Size.Width * index, 0,
ContentScrollView.Frame.Size.Width, ContentScrollView.Frame.Size.Height);
if (frame.X >= ContentScrollView.ContentSize.Width)
{
return;
}
_enableParallax = !animated;
var point = _tabButtons[index].Frame;
point.X -= (TitleScrollView.Bounds.Size.Width - _tabButtons[index].Frame.Size.Width) / 2f;
TitleScrollView.SetContentOffset(new CGPoint(point.X, point.Y), animated);
ContentScrollView.ScrollRectToVisible(frame, animated);
}
public void ReloadData()
{
foreach (var viewController in _viewControllers)
{
viewController.WillMoveToParentViewController(null);
viewController.View.RemoveFromSuperview();
viewController.RemoveFromParentViewController();
}
_viewControllers.Clear();
if (Datasource != null)
{
_viewControllerCount = Datasource.NumberOfViewControllers;
for (var i = 0; i < _viewControllerCount; i++)
{
var viewController = Datasource.GetViewController(i);
AddChildViewController(viewController);
var size = ContentScrollView.Frame.Size;
viewController.View.Frame = new CGRect(size.Width * i, 0, size.Width, size.Height);
ContentScrollView.AddSubview(viewController.View);
viewController.DidMoveToParentViewController(this);
_viewControllers.Add(viewController);
}
GenerateTabs();
Layout();
_selectedIndex = Math.Min(_viewControllerCount - 1, _selectedIndex);
if (_selectedIndex > 0)
{
SwitchPage(_selectedIndex, false);
}
}
}
public override void LayoutSubviews()
{
base.LayoutSubviews();
ContentScrollView.ContentInset = new UIEdgeInsets(0.0f, LeftAvailable ? LeftButton.Frame.Width : 0.0f, 0.0f, LockRight ? 0.0f : RightButton.Frame.Width);
ContentScrollView.SetContentOffset(CGPoint.Empty, true);
LeftButton.Hidden = !LeftAvailable;
}
private void ViewModelOnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName != nameof(SettingsWindowViewModel.SelectedViewModel))
{
return;
}
ContentScrollView.ScrollToTop();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.AddDefaultNavigationTitle();
UITapGestureRecognizer tapRecognizer = new UITapGestureRecognizer(OnTapGesture);
ContentScrollView.AddGestureRecognizer(tapRecognizer);
ItemPriceTextField.Text = DefaultPriceText;
ItemPriceTextField.EditingDidEnd += ItemPriceTextFieldEditingDidEnd;
ItemPriceTextField.ShouldChangeCharacters += ItemPriceTextFieldShouldChangeCharacters;
PhotoAddedContainerView.Hidden = true;
AddPhotoButton.TouchUpInside += OnAddPhotoButtonTapped;
RemovePhotoButton.TouchUpInside += OnRemovePhotoButtonTapped;
AddItemButton.TouchUpInside += OnAddItemButtonTapped;
}
void ReleaseDesignerOutlets()
{
if (ContainerViewMain != null)
{
ContainerViewMain.Dispose();
ContainerViewMain = null;
}
if (LeftButton != null)
{
LeftButton.Dispose();
LeftButton = null;
}
if (RightButton != null)
{
RightButton.Dispose();
RightButton = null;
}
if (ContentScrollView != null)
{
ContentScrollView.Dispose();
ContentScrollView = null;
}
if (ContainerViewSlider != null)
{
ContainerViewSlider.Dispose();
ContainerViewSlider = null;
}
if (SliderTitleLabel != null)
{
SliderTitleLabel.Dispose();
SliderTitleLabel = null;
}
}
private void AdjustConstraints()
{
View.RemoveConstraints(View.Constraints);
View.AddConstraints(
ShowOnBottom ?
TitleScrollView.AtBottomOf(View) :
TitleScrollView.AtTopOf(View),
TitleScrollView.AtLeftOf(View),
TitleScrollView.AtRightOf(View),
TitleScrollView.Height().EqualTo(_tabHeight),
ContentScrollView.WithSameWidth(TitleScrollView),
ShowOnBottom ?
ContentScrollView.Above(TitleScrollView) :
ContentScrollView.Below(TitleScrollView),
ShowOnBottom ?
ContentScrollView.AtTopOf(View) :
ContentScrollView.AtBottomOf(View)
);
}
private void ScrollViewToShowCurrentResponder(NSNotification notification)
{
var keyboardInfoValue = notification.UserInfo[UIKeyboard.FrameEndUserInfoKey] as NSValue;
CGRect rawFrame = keyboardInfoValue.CGRectValue;
CGRect keyboardFrame = View.ConvertRectFromView(rawFrame, null);
nfloat keyboardHeight = keyboardFrame.Height;
UIEdgeInsets contentInsets = new UIEdgeInsets(0, 0, keyboardHeight, 0);
ContentScrollView.ContentInset = contentInsets;
ContentScrollView.ScrollIndicatorInsets = contentInsets;
CGRect aRect = View.Frame;
aRect.Size = new CGSize(aRect.Size.Width, keyboardHeight);
var responder = View.GetFirstResponder();
if (!aRect.Contains(responder.Frame))
{
PointF scrollPoint = new PointF(0.0f, (float)responder.Frame.Y - (float)keyboardHeight);
ContentScrollView.SetContentOffset(scrollPoint, true);
}
}
void ReleaseDesignerOutlets()
{
if (AddItemButton != null)
{
AddItemButton.Dispose();
AddItemButton = null;
}
if (AddPhotoButton != null)
{
AddPhotoButton.Dispose();
AddPhotoButton = null;
}
if (AddPhotoContainerView != null)
{
AddPhotoContainerView.Dispose();
AddPhotoContainerView = null;
}
if (ContentScrollView != null)
{
ContentScrollView.Dispose();
ContentScrollView = null;
}
if (ItemDescriptionLabel != null)
{
ItemDescriptionLabel.Dispose();
ItemDescriptionLabel = null;
}
if (ItemDescriptionLineView != null)
{
ItemDescriptionLineView.Dispose();
ItemDescriptionLineView = null;
}
if (ItemDescriptionTextView != null)
{
ItemDescriptionTextView.Dispose();
ItemDescriptionTextView = null;
}
if (ItemNameLabel != null)
{
ItemNameLabel.Dispose();
ItemNameLabel = null;
}
if (ItemNameLineView != null)
{
ItemNameLineView.Dispose();
ItemNameLineView = null;
}
if (ItemNameTextField != null)
{
ItemNameTextField.Dispose();
ItemNameTextField = null;
}
if (ItemPhotoView != null)
{
ItemPhotoView.Dispose();
ItemPhotoView = null;
}
if (ItemPriceLabel != null)
{
ItemPriceLabel.Dispose();
ItemPriceLabel = null;
}
if (ItemPriceTextField != null)
{
ItemPriceTextField.Dispose();
ItemPriceTextField = null;
}
if (PhotoAddedContainerView != null)
{
PhotoAddedContainerView.Dispose();
PhotoAddedContainerView = null;
}
if (RemovePhotoButton != null)
{
RemovePhotoButton.Dispose();
RemovePhotoButton = null;
}
}
public void CloseSlideButtons()
{
ContentScrollView.SetContentOffset(CGPoint.Empty, true);
}
